Stainless Steel 431 Fasteners

Size In Ready Stock

• Bolts Size : M1.2 To M120
• Screw Size = M1.2 To M48
• Washer Size = M2 To M24
• Stud Size = M4 To M100
• Nut Size = M2 To M80

431 Stainless Bolts Head Style

• Flat head
• Truss head
• Round head
• Button head
• Hex head

Neck Type of Alloy 431 Bolts

• Triangular Neck
• Knurled Neck
• Hex Neck
• Square Neck

Threads Types of 431 Head Bolts

• BSW
• CBSF
• UN
• UNF

Head Drive of 431 SS Bolts

• Phillips
• Six-Lobe
• Slotted
• Phillips/Slot

UNS S43100 Bolt Ends Types

• Flat or Saw cut
• Rounded
• Sheared
• Chamfered

SS 431 Threaded Rod

• Condition : Threading or Cold Drawn
• Threads : Left and Right Hand, Both Side

UNS S43100 Stud Bolts

• End Types : Rounded, Flat and Saw Cut
• Threads : Double End, Fully or Fine Threaded

EN 1.4057 Screws

• Threads Pitch : Fine and Coarse
• Head Shape : Round, Pan, Button

Type 431 Washers

• Forms : A, D, C, G, B, E
• Thickness : 0.002" to ½"

Manufacturing Process

• CNC Machine
• Hot forging
• Cold forging

Advantages

• Corrosion Resistance
• Strength and Toughness
• Weldability

Testing Requirements

• Intergranular Corrosion (IGC) Test
• Hardness Testing
• X-Ray Testing

Application

• Oil and Gas
• Aerospace
• Medical
• Marine
• General Engineering

Packaging Types

• Wooden Cases
• Custom
• Carton Box

Raw Material

• European
• German
• Janpanese

• Manganese (Mn) = 1.0% (Maximum)
• Phosphorus (P) = 0.04% (Maximum)
• Carbon (C) = 0.2% (Maximum)
• Silicon (Si) = 1.00% (Maximum)

• Nickel (Ni) = 1.25 – 2.5%
• Iron (Fe) = 82% (Maximum)
• Sulfur (S) = 0.03%
• Chromium (Cr) = 15 – 17%